“My great concern is not whether you have failed, but whether you are content with your failure”
Never be content with failure.
Keep trying and never, ever be afraid to fail a few times along the way to get to where you know you should be.
It is never fun admitting you were wrong, maybe lazy, or not up for the task, but we learn how to be humble winners when we learn how to accept defeat with grace. It is often a painful process, which is why it is so important not to chew on your pain and to move forward.